Cotopaxi Kusa ShirtA fitted cut, button-down front, and a shirt-like profile make this jacket an excellent low-bulk option for the colder months.

Yes, Cotopaxi is calling this a shirt. Truth be told, though, the Kusa Shirt functions more like a low-bulk jacket. Except, you know, it’s cut like the collared, long-sleeved shirts you wear to work every morning.

A streamlined layering option for the colder months, the “shacket” combines a shirt-like profile with an insulated material, allowing you to stay toasty while camping or hiking without getting burdened with too much bulk. This is not to be confused with the outfit’s Kusa Jacket, by the way, which is styled like an actual coat, complete with zippers and high collars.

The Cotopaxi Kusa Shirt has a fitted shirt-like cut, along with folded collars and a button down front for a profile that’s not unlike your button-downs for the office. Even the cuffs come with snap buttons for a shirt-like wear, along with a single left breast pocket to carry light gear. Since it’s not a shirt, they also threw in zippered hand pockets, along with 20D ripstop nylon construction for durable performance in the mountains and a DWR finish to keep the rain at bay.

It comes with Cotopaxi’s llama-poly insulation, which boast an impressive 40 to 50 degree comfort range for excellent performance during colder days. Other features include snap buttons and back hem snaps.